1907 Schaff-Herzog Encylopedia of Religious Knowledge
- Innocents, Feast of the Holy
- Inquisition
- Insabatati (Sabotiers)
- Inscriptions
- Inspiration
- Inspired, The
- Installation
- Institute of the Blessed Virgin. See ENGLISH LADIES
- Institution
- Intention. See SACRAMENT, § 4
- Intercession. See MEDIATOR
- Interdict
- Interim
- Intermediate State
- Interpolations in the New Testament
- Interstitia
- Intinction. See EASTERN CHURCH, III., § 5
- Introduction to the Bible. See BIBLICAL INTRODUCTION
- Introit
- Invention of the Cross. See CROSS, INVENTION (OR FINDING) OF THE
- Investiture
- Iona
- Ireland
- Ireland, John
- Irenaeus
- Irenaeus, Christoph
- Irene
- Irion, Paul
- Irish Articles
- Irish Sisters of Charity. See ENGLISH LADIES
- Irregularity
- Irving, Edward
- Irvingites. See CATHOLIC APOSTOLIC CHURCH; AND IRVING, EDWARD
- Isaac
- Issac of Antioch
- Isaac of Nineveh
- Isaac Ben Sheshet Barfat
- Isaacs, Abram Samuel
- Isaiah
- Isaiah, Martyrdom of. See PSEUDEPIGRAPHA, IV., 34
- Isenmann (more correctly Isenmenger or Eisenmenger), Johann
- Ishbosheth
- Ishmael
- Ishtar. See ASHTORETH; ASSYRIA, VII.; BABYLONIA, VII., 2, § 7 , 3, § 5.
- Isidore Mercator
- Isidore of Pelusium
- Isidore of Seville
- Isidorian Decretals. See PSEUDO-ISIDORIAN DECRETALS
- Isidorus Mercator. See ISIDORE MERCATOR
- Iskandarunah. See PHENECIA, PHENICIANS, I. § 2
- Islam. See MOHAMMED, MOHAMMEDANISM
- Israel, History of
- Italia. See BIBLE VERSIONS, A, II., 1
- Italy
- Italy, The Reformation in
- Ithacius Clarus. See PRISCILLIAN, PRISCILLIANISTS
- Iturea
- Iverach, James
- Ives, Levi Silliman
- Ivimey, Joseph
- Ivo, of Chartres (Ivo or Yvo Carnotensis)